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Mandatory Masking In Schools Reduced COVID-19 Cases During Delta Surge | NEWS-Line for Occupational Therapists & COTAs
 


Mandatory Masking In Schools Reduced COVID-19 Cases During Delta Surge


Source:

Schools with mandatory masking during the Delta surge had approximately 72% fewer cases of in-school transmission of SARS-CoV-2 when compared to schools with optional or partial masking policies, according to a study funded by the National Institutes of Health.

The study included more than 1.1 million students and over 157,000 staff attending in-person school across nine states: North Carolina, Wisconsin, Missouri, California, Washington, Georgia, Tennessee, Kansas and Texas. The study is supported by NIH’s Rapid Acceleration of Diagnostics – Underserved Populations (RADx-UP) program and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD). It appears in Pediatrics.

The authors pointed out that their study was conducted when Delta was the dominant variant, and that their study did not obtain data on school masking in preventing the spread of the Omicron variant. However, they added that masking remains a critical preventive measure in times with high community infection rates with more transmissible variants, such as Omicron.

The U.S. Centers for Disease Control and Prevention recently updated its guidelines for masking and other preventive measures, taking into account community levels of COVID-19. The CDC recommends indoor masking in areas with high community levels of COVID-19. CDC’s COVID-19 Community levels recommendations align precautions for educational settings(link is external) with those for other community settings.

In the current study, most COVID-19 cases among students and staff were acquired from the community and approximately 10% of cases were acquired within school. The researchers found that for every 100 community-acquired cases, school districts with mandatory masking had approximately 7.3 cases of in-school infections, while optionally masked districts had 26.4 cases of in-school infections. In other words, school districts with optional masking had approximately 3.6 times the rate of in-school COVID-19 cases when compared to schools with mandatory masking. These data also show that mandatory masking was associated with a 72% reduction of in-school COVID-19 cases, compared to districts with optional masking.

The study included 61 school districts (kindergarten through grade 12) that provided data from July 26, 2021, through Dec. 13, 2021, a period encompassing the Delta surge and preceding the Omicron surge. In total, there were 40,601 primary infections acquired in the community (36,032 among students, 4,569 among staff) and 3,085 secondary infections acquired in school (2,844 among students, 241 among staff). Of these school districts, six districts (10%) had optional masking policies; nine had partial masking, i.e., policies that changed during the study or only applied to certain grade levels (15%); and the remaining 46 districts (75%) required masking for the entirety of the study.

Who
Sonia Lee, Ph.D., acting branch chief of the NICHD Maternal and Pediatric Infectious Disease Branch is available for interviews. Please call 301-496-5133 or e-mail [email protected](link sends e-mail).

Reference
Boutzoukas AE et al. School masking policies and secondary SARS-CoV-2 transmission. Pediatrics DOI: 10.1542/peds.2022-056687(link is external) (2022)

About the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): NICHD leads research and training to understand human development, improve reproductive health, enhance the lives of children and adolescents, and optimize abilities for all. For more information, visit https://www.nichd.nih.gov

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov

NIH…Turning Discovery Into Health®

Source: National Institutes of Health (NIH)






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